The (study) results revealed that Covid-19 conspiracy beliefs prospectively predicted a decreased likelihood of getting tested for corona; if tested, an increased likelihood of the test coming out positive; and, an increased likelihood of having violated corona regulations, deteriorated economic outcomes (job loss; reduced income), experiences of social rejection, and decreased overall well-being. Most of these effects generalized to a broader susceptibility to conspiracy theories (i.e. conspiracy mentality).
https://www.cambridge.org/core/journals/...B03C5D5AC1
https://www.cambridge.org/core/journals/...B03C5D5AC1
Being told you're delusional does not necessarily mean you're mental.